What type of circuit has the ability to have individual parts that can be turned off without affecting the entire circuit
a- open circuit
b-series circuit
c- combination circuit
d-parallel circuit

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656(red) and 486 (blue). light from a hydrogen lamp illuminates a diffraction grating with 500 lines per mm, and the light is observed on a screen 1.50 behind the grating. what is the distance between the first-order red and blue fringes?

2. which of the following devices is associated with the reception of radio signals? o a. demodulator o b. transmitting antenna o c. oscillator o d. microphone

Robin is swinging back and forth from a trapeze. in which of the following situations is his kinetic energy being transformed into potential energy